Hand punch press



F. I AGO HAND PUNCH PRESS Dec. 11, 1945.

Filed Jan. 20, 1945 3' Sheets-Sheet 1 IN V EN TO'R. Francisco Lcuqo ATTORNEY Dec. 11, 1945 F, .LAGO 2,390,655

' I HAND PUNCH PRESS Filed Jan. 20, 1945 3 Sheets-Sheet '2 \Q a t w -18 INVENTOR.

aewp Francisco Laqq 58 x P y I 1 A ATTORNEK F. LAGO HAND PUNCH PRESS Filed Jan. 20, 1945 [N V EN TOR. Franc \sco Laqo ATTORNE- Dec. 11, 1945.

structed in accordance with the device with ternal parts thereof.

punch, as will later Patented Dec. 11, 1945 UNITED STATES PATENT OFFICE 2,390,655 HAND PUNCH PRESS Francisco Lago, Staten Island, N. Y. Application January 20, 1945, Serial No. 573,792

6 Claims.

This invention relates to new and useful improvements in a hand punch press.

More specifically, the present invention proposes a punch device Still further, it is proposed to provide a punch device of the aforesaid type having an adjustable particularly set forth.

1 In the accompanying drawings forming a material part of this disclosure:

Fig. 1 is a side view of a punch device conthis invention. device. is a rear view of the device. is a bottom view of the device. is a section on the line -5 of Fig. 1. is an enlarged foreshortened side vie-w of a side plate removed to show in- Fig. 2 is a front view of the fig. 3 Fig.4 Fig.5 Fig. 6

size punches for forming a. range of holes.

The punch device-comprises a base l0 having a rectangular part I l and a collar [2. The collar I2 is provided with four set screws I3 which act to removably hold a sleeve M in the collar, the sleeve housing a di 5 for coaction with the appear, the hollow center of employ, there being a punch die for each punch used in the device.

Two side plates l6 are secured to the base I0,

a wear plate 28. The

these plates forming the supporting means for various other of the parts of the device. The plates l6 are secured to the base In by bolts I1 and the base is provided with holes [8 for securing the device to a work bench. A block I9 is secured rigidly between the plates on the block by means of a flange 22 posed in the shoulder.

slidably dis- This flange is provided guidehas a vertical groove 29 having two diverging side faces.

A cam member 33 having an Orifice 30', is journalled in the side plates at the front of the block 34. The cam member 30 has an orifice 35 eccentric to the cam shaft axis I5 and a pin 36 is mounted in this orifice and in turn supports a punch holder 37, wear plates 38 being provided between the punch holder and the sidewalls. Pin 33 pivotally mounts the punch holder so that it 36. It has crossing lubricating grooves in its side walls, and'a V-shaped rear wall 43 correspond- 20. A guideZl is supported punch holder.

vertical position to thereon; This latch Plate 44 can be removed easily by removing bolts 46, and then the punch holder can be swung forward, as shown in Fig. 10, to a position permitting the set screw 4| to be loosened, the punch to b removed, new punch placed in the punch holder. The punch 40 has a wide base 41 and a narrow punch part 48. Other punches having the same size base but larger or smaller punch parts can thus easily be secured in the same Thetop of the punch holderis formed more for less fork-shaped to receive the cam 30 as is clearly shown in Fig. 9.

An operating handle 49 is rigidly secured be tween two spaced links 50 by two bolts 5! and 52 and the two links are mounted on the trunnions 3| of the cam 30 and secured thereto against rotation thereon by keys 53. Thus movement of the handle 49 causes corresponding movement of the links and rotation of the cam. The operating handle is adapted to swing from substantially substantially horizontal positioh, as is clearly shown in Fig. '6. In vertical position, the punch is withdrawn from the die and in horizontal pos'tion the unch is in the die, this position being the position reached by the punch after the punching operation.

A'latch 54 is mounted on bolt 5| for swinging has a rear bottom: catch 55 and a front top catch 56. The front catch 56 coactstvith "a lever?! pivotally mounted on the handle and the rear catch 55 coacts with a curved member 58 'se'cured to the back of the plates I5 byscr'ews 59. When the handle is in vertical position, the rear catch 55 coacts with the member 58 to hold it in this position and before the i 1 handle can be swung forward to move the punch downwardly on its punching stroke, the lever 51 must be moved to release the latch 54 so that the rear catch can be released from the member 58. Latch 54 is formed of two side members 60 connected by an integral front part 6 I.

7 Plate 44 is provided with a cut 'out portion 62 on its rear face at the top to provide clearance permitting the handle to be swung to horizontal position. The rear face of plate 44 including the rear race of the cutout portion is lined with a wear plate 63 secured by a screw M'threaded in an orifice opening into the cut out portion. -A rchannel oa is out through the bottom of the plate 44 and wear plate 63, this channel exposing set 5 screw 41 so that it can be tightened in case it gets loose without removing plate 44.

The operation of the punch device is as follows: Assuming that first a new punch must be put in the device, the bolts plate 44 are removed, the plate 44 is removed 46 on opposite sides of the zand the punch holder 31 is swung forwardly as 7 shown in Fig. 10. The set screw M is then loosened and the punch removed and a new punch or a punch of a different size inserted and the set screw 4| tightened. Also, the set screws l3 are loosened and the die [5 removed and a new die suitable for the new punch installed, whereupon the set screws l3 are tightened and the plate 44 put back and secured in place. The screws 21 are then tightened up so that the punch holder is held between the plate and the guide 2| with working clearance. This may be facilitated by moving the handle 49 forwardly to position the'punch holder squarely against the guide. The handle '49 is then returned to vertical position and the deviceis ready to punch a hole, for instance a hole in a sheet ofirnet'al.

Thesh'eet of metal is placed on the die, the lever 51 is moved toward the handle 49 releasing the side walls having a latch 54, and the handle 49 is pulled forwardly, the rear catch As handle 49 moves forwardly and downwardly, the cam shaft 3i is rotated in the orifice 39' of cam member 3!! moving the member 30 downward and thereby moving the punch holder downwardly and the punch toward the sheet of metal. The handle 49 is long enough to provide proper'leverage to force the punch through the sheet of metal. After the hole is punched, the handle is returned to vertical position whereupon the latch automatically springs into place, locking the handle in this vertical position. 7 While I have illustrated and described the preferred embodiments of my invention, it is to be understood that I do not limit myself to the precise constructions herein disclosed and the right is reserved to all changes and modifications coming within the scope of the invention as defined in the appended claims.

Having thus described my invention, what I claim as new, and-desire to secure by UnitedStates Letters Patent is":

l. A punch device comprising a base, side walls extending'upwardly from. said base, a die supported on. said base, a block rigidly secured to said side walls, a guide supported between'said side walls having a slotted flange. overlying said block, a bolt in saidslot securing said guide to said block for movement relative thereto, means carried by said blockfo'r moving said guide, a cam member journaled in said side walls oversaid die, a punch holder pivotally secured to said cam member for sliding. movement vertically along said guide, a backing plate backing said punch holder-on the side thereof remote from said guide, a punch secured ment with said die, "and ,a handle for operating said cam member to'movesaid punch toward'and away from said die.

2. Apunch device extending upwardly from said base, a die supported on said base; a block rigidly secured to said side walls, a guide "supported between saidiside walls having a slotted flange overlying saidblock, "a bolt in said slot securing said guide to {said block for'rhovement relative thereto, means carried by said block for moving said guide, a cam member journalled' in said side walls over said die, a punch :holder pivot-ally secured to said cam member for sliding movement vertically alongisaid guide, a backing plate backing said punch holder on the side thereof remote from said guide, a punch secured in'said punch'holder in alignment with said die, a handle for operating saidcam member to :move "said. punch toward andaway from said die, and latch means for locking said handle in raised position.

'3. A'punch-device comprising a base, sidewalls extending upwardly fromsaid base, a die supported on said base, ja'block rigidly secured to said side walls, 'a guide supported between :said slotted flange overlying ;said block, a'boit in said slot securing said guide to said block for movement relative thereto, means carried by said block for moving said guide, a cam member journalled in said side wallsover said die, a punch holder pivotally secured to said cam member for sliding movement vertically along said guide, a removable backing plate back ing said punch holder-on the side thereof remote from said guide, apunchremovably, secured in said punch holder in alignment withsaid dieg-and a handle for operating said cam member to move said punchtoward and away from-said die,,said

55 sliding off of the member 58'.

in saidpunch holder in aligncomprising a base, side walls holder being swingable when said backing plate is removed to facilitate removal of said punch from said holder.

4. A punch device comprising a base, side walls extending upwardly from said base, a die sup:- ported on said base, a block rigidly secured to said side walls, a guide supported between said side walls having a slotted flange overlying said block, and a V-shaped vertical channel remote from said block, a bolt in said slot securing said guide to said block for movement relative thereto, means carried by said block for moving said guide, a cam member journalled in said side walls over said die, a punch holder pivotally secured to said cam member and having a V-shaped vertical face for sliding movement vertically along said guide channel, a backin plate backing said punch holder on the side thereof remote from said guide, a. punch secured in said punch holder in alignment with said die, and a handle for operating said cam member to move said punch toward and away from said die.

5. A punch device comprising a base, side walls extending upwardly from said base, a die supported on said base, a block rigidly secured to said side walls, a guide supported between said side walls having a slotted flange overlying said block, a bolt in said slot securing said guide to said block for horizontal adjustment movement relative thereto, means moving said guide, a cam member journalled in said side walls over said die, a punch holder pivcarried by said block for 0 otally secured to said cam member for sliding movement vertically along said guide, said punch holder being fixed as to its horizontal position, a backing plate backing said punch holder on the side thereof remote from said guide, a punch secured in said punch holder in alignment with said die, and a-handle for operating said cam member to move said punch toward and away from said die, said punch holder being pressed in working engagement with said backing plate by said adjustable guide.

6. A punch device comprising a base, side walls extending upwardly from said base, a die supported on said base, a block rigidly secured to said side walls, a guide supported between said side walls having a slotted flange overlying said block, a bolt in said slot securing said guide to said block for movement relative thereto, means carried by said block for movin said guide, a cam member journalled in said side walls over said die, a punch holder pivotally secured to said cam member for sliding movement vertically along said guide, a backing plate backing said punch holder on the side thereof remote from said guide, having a slot in its lower end, a punch in said punch holder in alignment with said die, a set screw securing said punch in said punch holder, said set screw being in alignment with said slot, and a handle for operating said cam member to move said punch toward and away from said die.

FRANCISCO LAGO. 

